/*******************************************************************************
 * Copyright 2014 United States Government as represented by the
 * Administrator of the National Aeronautics and Space Administration.
 * All Rights Reserved.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/
package gov.nasa.ensemble.common.ui.treemenu;

import java.util.Collection;

/**
 * For convenience, a list of menu contributors can be looked up in more than one way:
 * <ol>
 * <li> Any subclass of MenuContributor automatically doubles as a provider of itself.
 * <li> Any subclass of MenuContributorContainer automatically provides all its enclosed subclasses
 *      that are MenuContributor subclasses.
 * <li> In the future, if plugins ever need to provide menu items to plugins that don't
 * depend on them, we can write a third implementation that uses the extension registry.
 * <li> Custom mechanisms can always be written that instantiate parameterized contributors; for example,
 * <br><code>
 * new HypotheticalExample("*.txt", "Delete text file"), new HypotheticalExample("*.xls", "Delete spreadsheet"), 
 * </code>
 * </ol>
 * 
 * @author kanef
 *
 */

public interface IContextualCommandContributor {
	
	public Collection<? extends ContextualCommandContributor<?>> getContributors(Object objectInTree);

}
